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What is the difference between packaged_task and async
...when they're done, and std::packaged_task if you want to wrap up things in order to move them to other threads or call them later. Or, to quote Christian:
In the end a std::packaged_task is just a lower level feature for implementing std::async (which is why it can do more than std::async if use...
What does SQL clause “GROUP BY 1” mean?
...the first column regardless of what it's called. You can do the same with ORDER BY.
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Will HTML5 allow web apps to make peer-to-peer HTTP connections?
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UPDATE 10/17/2012: This functionality now exists in Chrome Stable v22. In order to use this functionality in Chrome, one must enable two flags in chrome://flags:
Enable MediaStream
Enable PeerConnection
Then you can visit the AppRTC Demo Page to try out the demo. See the WebRTC - Running the De...
How to get Last record from Sqlite?
...LE);
OR
you can also used following solution:
SELECT * FROM tablename ORDER BY column DESC LIMIT 1;
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Sorting data based on second column of a file
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Faced issue with "wrong" ordering. Pay attention to man "*** WARNING *** The locale specified by the environment affects sort order. Set LC_ALL=C to get the traditional sort order that uses native byte values." (for string match case without -n)
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Comparing two collections for equality irrespective of the order of items in them
...valent if they
have the same elements in the same
quantity, but in any order. Elements
are equal if their values are equal,
not if they refer to the same object.
Using reflector, I modified the code behind AreEquivalent() to create a corresponding equality comparer. It is more complete tha...
How to align checkboxes and their labels consistently cross-browsers
... Not exactly true: The Label-for will allow users to click the label in order to check the checkbox, in addition to simply clicking the checkbox itself. It's quite handy for tying the two elements together.
– EndangeredMassa
Nov 20 '08 at 18:30
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Run automatically program on startup under linux ubuntu [closed]
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sudo mv /filename /etc/init.d/
sudo chmod +x /etc/init.d/filename
sudo update-rc.d filename defaults
Script should now start on boot. Note that this method also works with both hard links and symbolic links (ln).
Edit
At this point in the bo...
Sort ArrayList of custom Objects by property
... above the other answer is beyond me. This link may also be useful: Object Ordering Tutorial at Sun.com.
– BalusC
May 6 '10 at 21:26
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403 Forbidden vs 401 Unauthorized HTTP responses
... (or 3xx: redirection)
Checks are usually done in this order:
404 if resource is public and does not exist or 3xx redirection
OTHERWISE:
401 if not logged-in or session expired
403 if user does not have permission to access resource (file, json, ...)
404 if resource does not ex...